I am looking for the best Continuous integration solution for nodejs apps. Preferably something free or opensource to manage deployments etc
You may want to checkout concourse.ci.
It is quite feature rich and has an elegant, easy to use UI.
Check out Docker:
Then check out the Docker GUIs:
Stephen Ward
Full Stack Developer
I’ve had great success and very little headaches using CircleCI to deploy Docker apps to AWS
circleci.com
Worth checking out!